Correct documentation.
Improve documentation.
Specify how to get phpmailer library correctly with drush make.
Remove 3rd party libraries (phpmailer and Wkhtmltopdf) from repository.

3rd party libraries should and included with drush make instead.

Hacks to Wkhtmltopdf have been discarded and can be re-implemented in custom code using the "username" and "password" options of the Wkhtmltopdf class.
Fix documentation and whitespace.
Use watchdog smartly and correctly.
Correct uses of proposal_nid_for_testing_pdf_generation.
Do not need to prevent caching on /apply for anonymous users now that users must logged in to apply.
Disable menu items that exist for development and testing only.
Use a fork of Wkhtmltopdf.php.